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On 22 Jul 97, Woolston Craig wrote:
> ---------------Included Message---------------
>
> Subject: Smog Hell amended.
>
> Fellow air-breathers,
> I just got more specific advice about the '72 Squareback I'm having
> trouble smogging.
>
> Idle RPM test:
> CO should be under 5 but is 7.22
> HC - PPM should be under 0550 but is 0776
>
> Anybody have any suggestions?
>
> -------------------------------------
>
> Not sure how much help this is but you are running too rich. Is
> this FI or Carbs? If FI make sure that your voltage at the battery
> at fast idle is at least 14.1 to 14.4 volts (use only Bosch voltage
> regulators), the pressure regulator is set at 32 psi, and the
> throttle position switch is adjusted correctly. Other things to try
> but more difficult to test, is leaking injectors or try swapping
> pressure sensors. If this is Carbs, I have no idea since the only
> carburated things I own are a lawnmower and a weedwacker.
This is all correct except that 32 psi is just a bit high. The spec
is 28-31, but I don't know if reducing it will help any. The system
regulating voltage is the most important thing and may be exactly
your problem.
Jim
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Melissa Kepner Jim Adney
jadney@vwtype3.org jadney@vwtype3.org
Laura Kepner-Adney
Madison, Wisconsin
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